HC-appropriate inert substrate?
My first attempt with HC failed, most likely because the standard pet store gravel substrate was too large for it. Lighting could have been a factor too but that's since been addressed, so I'm going to replace the gravel in the area where the HC will go just to be sure.
I've checked the local fish shops, but their offerings are nearly identical to what I have. There's no size indication on the packaging either, so I'm not sure what to order. I'm looking for inert light brown/white gravel small enough for HC.
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